Physics · JEE | MECHANICAL PROPERTIES OF FLUIDS

For a steady flow of an incompressible fluid through a pipe of varying cross-sectional area, the equation of continuity is expressed as \( Av = \text{constant} \). What physical conservation law is this equation based on?

1. A
   Conservation of energy
2. B
   Conservation of mass
3. C
   Conservation of linear momentum
4. D
   Conservation of angular momentum